/* http://keith-wood.name/countdown.html
 Countdown for jQuery v2.0.2.
 Written by Keith Wood (kbwood{at}iinet.com.au) January 2008.
 Available under the MIT (http://keith-wood.name/licence.html) license.
 Please attribute the author if you use it. */
define(function (require, exports, moudles) {

    require('/plugins/jquery.timer/jquery.plugin');

    return function (jquery) {
        (function ($) { // Hide scope, no $ conflict

            var pluginName = 'countdown';

            var Y = 0; // Years
            var O = 1; // Months
            var W = 2; // Weeks
            var D = 3; // Days
            var H = 4; // Hours
            var M = 5; // Minutes
            var S = 6; // Seconds

            /** Create the countdown plugin.
             <p>Sets an element to show the time remaining until a given instant.</p>
             <p>Expects HTML like:</p>
             <pre>&lt;div>&lt;/div></pre>
             <p>Provide inline configuration like:</p>
             <pre>&lt;div data-countdown="name: 'value'">&lt;/div></pre>
             @module Countdown
             @augments JQPlugin
             @example $(selector).countdown({until: +300}) */
            $.JQPlugin.createPlugin({

                /** The name of the plugin. */
                name: pluginName,

                /** Countdown expiry callback.
                 Triggered when the countdown expires.
                 @callback expiryCallback */

                /** Countdown server synchronisation callback.
                 Triggered when the countdown is initialised.
                 @callback serverSyncCallback
                 @return {Date} The current date/time on the server as expressed in the local timezone. */

                /** Countdown tick callback.
                 Triggered on every <code>tickInterval</code> ticks of the countdown.
                 @callback tickCallback
                 @param periods {number[]} The breakdown by period (years, months, weeks, days,
                 hours, minutes, seconds) of the time remaining/passed. */

                /** Countdown which labels callback.
                 Triggered when the countdown is being display to determine which set of labels
                 (<code>labels</code>, <code>labels1</code>, ...) are to be used for the current period value.
                 @callback whichLabelsCallback
                 @param num {number} The current period value.
                 @return {number} The suffix for the label set to use. */

                /** Default settings for the plugin.
                 @property until {Date|number|string} The date/time to count down to, or number of seconds
                 offset from now, or string of amounts and units for offset(s) from now:
                 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds.
                 @example until: new Date(2013, 12-1, 25, 13, 30)
                 until: +300
                 until: '+1O -2D'
                 @property [since] {Date|number|string} The date/time to count up from, or
                 number of seconds offset from now, or string for unit offset(s):
                 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds.
                 @example since: new Date(2013, 1-1, 1)
                 since: -300
                 since: '-1O +2D'
                 @property [timezone=null] {number} The timezone (hours or minutes from GMT) for the target times,
                 or null for client local timezone.
                 @example timezone: +10
                 timezone: -60
                 @property [serverSync=null] {serverSyncCallback} A function to retrieve the current server time
                 for synchronisation.
                 @property [format='dHMS'] {string} The format for display - upper case for always, lower case only if non-zero,
                 'Y' years, 'O' months, 'W' weeks, 'D' days, 'H' hours, 'M' minutes, 'S' seconds.
                 @property [layout=''] {string} Build your own layout for the countdown.
                 @example layout: '{d<}{dn} {dl}{d>} {hnn}:{mnn}:{snn}'
                 @property [compact=false] {boolean} True to display in a compact format, false for an expanded one.
                 @property [padZeroes=false] {boolean} True to add leading zeroes
                 @property [significant=0] {number} The number of periods with non-zero values to show, zero for all.
                 @property [description=''] {string} The description displayed for the countdown.
                 @property [expiryUrl=''] {string} A URL to load upon expiry, replacing the current page.
                 @property [expiryText=''] {string} Text to display upon expiry, replacing the countdown. This may be HTML.
                 @property [alwaysExpire=false] {boolean} True to trigger <code>onExpiry</code> even if target time has passed.
                 @property [onExpiry=null] {expiryCallback} Callback when the countdown expires -
                 receives no parameters and <code>this</code> is the containing division.
                 @example onExpiry: function() {
	...
 }
                 @property [onTick=null] {tickCallback} Callback when the countdown is updated -
                 receives <code>number[7]</code> being the breakdown by period
                 (years, months, weeks, days, hours, minutes, seconds - based on
                 <code>format</code>) and <code>this</code> is the containing division.
                 @example onTick: function(periods) {
 	var secs = $.countdown.periodsToSeconds(periods);
 	if (secs < 300) { // Last five minutes
		...
 	}
 }
                 @property [tickInterval=1] {number} The interval (seconds) between <code>onTick</code> callbacks. */
                defaultOptions: {
                    until: null,
                    since: null,
                    timezone: null,
                    serverSync: null,
                    format: 'dHMS',
                    layout: '',
                    compact: false,
                    padZeroes: false,
                    significant: 0,
                    description: '',
                    expiryUrl: '',
                    expiryText: '',
                    alwaysExpire: false,
                    onExpiry: null,
                    onTick: null,
                    tickInterval: 1
                },

                /** Localisations for the plugin.
                 Entries are objects indexed by the language code ('' being the default US/English).
                 Each object has the following attributes.
                 @property [labels=['Years','Months','Weeks','Days','Hours','Minutes','Seconds']] {string[]}
                 The display texts for the counter periods.
                 @property [labels1=['Year','Month','Week','Day','Hour','Minute','Second']] {string[]}
                 The display texts for the counter periods if they have a value of 1.
                 Add other <code>labels<em>n</em></code> attributes as necessary to
                 cater for other numeric idiosyncrasies of the localisation.
                 @property [compactLabels=['y','m','w','d']] {string[]} The compact texts for the counter periods.
                 @property [whichLabels=null] {whichLabelsCallback} A function to determine which
                 <code>labels<em>n</em></code> to use.
                 @example whichLabels: function(num) {
	return (num > 1 ? 0 : 1);
 }
                 @property [digits=['0','1',...,'9']] {number[]} The digits to display (0-9).
                 @property [timeSeparator=':'] {string} Separator for time periods in the compact layout.
                 @property [isRTL=false] {boolean} True for right-to-left languages, false for left-to-right. */
                regionalOptions: { // Available regional settings, indexed by language/country code
                    '': { // Default regional settings - English/US
                        labels: ['Years', 'Months', 'Weeks', 'Days', 'Hours', 'Minutes', 'Seconds'],
                        labels1: ['Year', 'Month', 'Week', 'Day', 'Hour', 'Minute', 'Second'],
                        compactLabels: ['y', 'm', 'w', 'd'],
                        whichLabels: null,
                        digits: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'],
                        timeSeparator: ':',
                        isRTL: false
                    }
                },

                /** Names of getter methods - those that can't be chained. */
                _getters: ['getTimes'],

                /* Class name for the right-to-left marker. */
                _rtlClass: pluginName + '-rtl',
                /* Class name for the countdown section marker. */
                _sectionClass: pluginName + '-section',
                /* Class name for the period amount marker. */
                _amountClass: pluginName + '-amount',
                /* Class name for the period name marker. */
                _periodClass: pluginName + '-period',
                /* Class name for the countdown row marker. */
                _rowClass: pluginName + '-row',
                /* Class name for the holding countdown marker. */
                _holdingClass: pluginName + '-holding',
                /* Class name for the showing countdown marker. */
                _showClass: pluginName + '-show',
                /* Class name for the description marker. */
                _descrClass: pluginName + '-descr',

                /* List of currently active countdown elements. */
                _timerElems: [],

                /** Additional setup for the countdown.
                 Apply default localisations.
                 Create the timer. */
                _init: function () {
                    var self = this;
                    this._super();
                    this._serverSyncs = [];
                    var now = (typeof Date.now == 'function' ? Date.now :
                        function () {
                            return new Date().getTime();
                        });
                    var perfAvail = (window.performance && typeof window.performance.now == 'function');
                    // Shared timer for all countdowns
                    function timerCallBack(timestamp) {
                        var drawStart = (timestamp < 1e12 ? // New HTML5 high resolution timer
                            (perfAvail ? (performance.now() + performance.timing.navigationStart) : now()) :
                            // Integer milliseconds since unix epoch
                        timestamp || now());
                        if (drawStart - animationStartTime >= 1000) {
                            self._updateElems();
                            animationStartTime = drawStart;
                        }
                        requestAnimationFrame(timerCallBack);
                    }

                    var requestAnimationFrame = window.requestAnimationFrame ||
                        window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame ||
                        window.oRequestAnimationFrame || window.msRequestAnimationFrame || null;
                    // This is when we expect a fall-back to setInterval as it's much more fluid
                    var animationStartTime = 0;
                    if (!requestAnimationFrame || $.noRequestAnimationFrame) {
                        $.noRequestAnimationFrame = null;
                        setInterval(function () {
                            self._updateElems();
                        }, 980); // Fall back to good old setInterval
                    }
                    else {
                        animationStartTime = window.animationStartTime ||
                            window.webkitAnimationStartTime || window.mozAnimationStartTime ||
                            window.oAnimationStartTime || window.msAnimationStartTime || now();
                        requestAnimationFrame(timerCallBack);
                    }
                },

                /** Convert a date/time to UTC.
                 @param tz {number} The hour or minute offset from GMT, e.g. +9, -360.
                 @param year {Date|number} the date/time in that timezone or the year in that timezone.
                 @param [month] {number} The month (0 - 11) (omit if <code>year</code> is a <code>Date</code>).
                 @param [day] {number} The day (omit if <code>year</code> is a <code>Date</code>).
                 @param [hours] {number} The hour (omit if <code>year</code> is a <code>Date</code>).
                 @param [mins] {number} The minute (omit if <code>year</code> is a <code>Date</code>).
                 @param [secs] {number} The second (omit if <code>year</code> is a <code>Date</code>).
                 @param [ms] {number} The millisecond (omit if <code>year</code> is a <code>Date</code>).
                 @return {Date} The equivalent UTC date/time.
                 @example $.countdown.UTCDate(+10, 2013, 12-1, 25, 12, 0)
                 $.countdown.UTCDate(-7, new Date(2013, 12-1, 25, 12, 0)) */
                UTCDate: function (tz, year, month, day, hours, mins, secs, ms) {
                    if (typeof year == 'object' && year.constructor == Date) {
                        ms = year.getMilliseconds();
                        secs = year.getSeconds();
                        mins = year.getMinutes();
                        hours = year.getHours();
                        day = year.getDate();
                        month = year.getMonth();
                        year = year.getFullYear();
                    }
                    var d = new Date();
                    d.setUTCFullYear(year);
                    d.setUTCDate(1);
                    d.setUTCMonth(month || 0);
                    d.setUTCDate(day || 1);
                    d.setUTCHours(hours || 0);
                    d.setUTCMinutes((mins || 0) - (Math.abs(tz) < 30 ? tz * 60 : tz));
                    d.setUTCSeconds(secs || 0);
                    d.setUTCMilliseconds(ms || 0);
                    return d;
                },

                /** Convert a set of periods into seconds.
                 Averaged for months and years.
                 @param periods {number[]} The periods per year/month/week/day/hour/minute/second.
                 @return {number} The corresponding number of seconds.
                 @example var secs = $.countdown.periodsToSeconds(periods) */
                periodsToSeconds: function (periods) {
                    return periods[0] * 31557600 + periods[1] * 2629800 + periods[2] * 604800 +
                        periods[3] * 86400 + periods[4] * 3600 + periods[5] * 60 + periods[6];
                },

                /** Resynchronise the countdowns with the server.
                 @example $.countdown.resync() */
                resync: function () {
                    var self = this;
                    $('.' + this._getMarker()).each(function () { // Each countdown
                        var inst = $.data(this, self.name);
                        if (inst.options.serverSync) { // If synced
                            var serverSync = null;
                            for (var i = 0; i < self._serverSyncs.length; i++) {
                                if (self._serverSyncs[i][0] == inst.options.serverSync) { // Find sync details
                                    serverSync = self._serverSyncs[i];
                                    break;
                                }
                            }
                            if (serverSync[2] == null) { // Recalculate if missing
                                var serverResult = ($.isFunction(inst.options.serverSync) ?
                                    inst.options.serverSync.apply(this, []) : null);
                                serverSync[2] =
                                    (serverResult ? new Date().getTime() - serverResult.getTime() : 0) - serverSync[1];
                            }
                            if (inst._since) { // Apply difference
                                inst._since.setMilliseconds(inst._since.getMilliseconds() + serverSync[2]);
                            }
                            inst._until.setMilliseconds(inst._until.getMilliseconds() + serverSync[2]);
                        }
                    });
                    for (var i = 0; i < self._serverSyncs.length; i++) { // Update sync details
                        if (self._serverSyncs[i][2] != null) {
                            self._serverSyncs[i][1] += self._serverSyncs[i][2];
                            delete self._serverSyncs[i][2];
                        }
                    }
                },

                _instSettings: function (elem, options) {
                    return {_periods: [0, 0, 0, 0, 0, 0, 0]};
                },

                /** Add an element to the list of active ones.
                 @private
                 @param elem {Element} The countdown element. */
                _addElem: function (elem) {
                    if (!this._hasElem(elem)) {
                        this._timerElems.push(elem);
                    }
                },

                /** See if an element is in the list of active ones.
                 @private
                 @param elem {Element} The countdown element.
                 @return {boolean} True if present, false if not. */
                _hasElem: function (elem) {
                    return ($.inArray(elem, this._timerElems) > -1);
                },

                /** Remove an element from the list of active ones.
                 @private
                 @param elem {Element} The countdown element. */
                _removeElem: function (elem) {
                    this._timerElems = $.map(this._timerElems,
                        function (value) {
                            return (value == elem ? null : value);
                        }); // delete entry
                },

                /** Update each active timer element.
                 @private */
                _updateElems: function () {
                    for (var i = this._timerElems.length - 1; i >= 0; i--) {
                        this._updateCountdown(this._timerElems[i]);
                    }
                },

                _optionsChanged: function (elem, inst, options) {
                    if (options.layout) {
                        options.layout = options.layout.replace(/&lt;/g, '<').replace(/&gt;/g, '>');
                    }
                    this._resetExtraLabels(inst.options, options);
                    var timezoneChanged = (inst.options.timezone != options.timezone);
                    $.extend(inst.options, options);
                    this._adjustSettings(elem, inst,
                        options.until != null || options.since != null || timezoneChanged);
                    var now = new Date();
                    if ((inst._since && inst._since < now) || (inst._until && inst._until > now)) {
                        this._addElem(elem[0]);
                    }
                    this._updateCountdown(elem, inst);
                },

                /** Redisplay the countdown with an updated display.
                 @private
                 @param elem {Element|jQuery} The containing division.
                 @param inst {object} The current settings for this instance. */
                _updateCountdown: function (elem, inst) {
                    elem = elem.jquery ? elem : $(elem);
                    inst = inst || this._getInst(elem);
                    if (!inst) {
                        return;
                    }
                    elem.html(this._generateHTML(inst)).toggleClass(this._rtlClass, inst.options.isRTL);
                    if ($.isFunction(inst.options.onTick)) {
                        var periods = inst._hold != 'lap' ? inst._periods :
                            this._calculatePeriods(inst, inst._show, inst.options.significant, new Date());
                        if (inst.options.tickInterval == 1 ||
                            this.periodsToSeconds(periods) % inst.options.tickInterval == 0) {
                            inst.options.onTick.apply(elem[0], [periods]);
                        }
                    }
                    var expired = inst._hold != 'pause' &&
                        (inst._since ? inst._now.getTime() < inst._since.getTime() :
                        inst._now.getTime() >= inst._until.getTime());
                    if (expired && !inst._expiring) {
                        inst._expiring = true;
                        if (this._hasElem(elem[0]) || inst.options.alwaysExpire) {
                            this._removeElem(elem[0]);
                            if ($.isFunction(inst.options.onExpiry)) {
                                inst.options.onExpiry.apply(elem[0], []);
                            }
                            if (inst.options.expiryText) {
                                var layout = inst.options.layout;
                                inst.options.layout = inst.options.expiryText;
                                this._updateCountdown(elem[0], inst);
                                inst.options.layout = layout;
                            }
                            if (inst.options.expiryUrl) {
                                window.location = inst.options.expiryUrl;
                            }
                        }
                        inst._expiring = false;
                    }
                    else if (inst._hold == 'pause') {
                        this._removeElem(elem[0]);
                    }
                },

                /** Reset any extra labelsn and compactLabelsn entries if changing labels.
                 @private
                 @param base {object} The options to be updated.
                 @param options {object} The new option values. */
                _resetExtraLabels: function (base, options) {
                    for (var n in options) {
                        if (n.match(/[Ll]abels[02-9]|compactLabels1/)) {
                            base[n] = options[n];
                        }
                    }
                    for (var n in base) { // Remove custom numbered labels
                        if (n.match(/[Ll]abels[02-9]|compactLabels1/) && typeof options[n] === 'undefined') {
                            base[n] = null;
                        }
                    }
                },

                /** Calculate internal settings for an instance.
                 @private
                 @param elem {jQuery} The containing division.
                 @param inst {object} The current settings for this instance.
                 @param recalc {boolean} True if until or since are set. */
                _adjustSettings: function (elem, inst, recalc) {
                    var serverEntry = null;
                    for (var i = 0; i < this._serverSyncs.length; i++) {
                        if (this._serverSyncs[i][0] == inst.options.serverSync) {
                            serverEntry = this._serverSyncs[i][1];
                            break;
                        }
                    }
                    if (serverEntry != null) {
                        var serverOffset = (inst.options.serverSync ? serverEntry : 0);
                        var now = new Date();
                    }
                    else {
                        var serverResult = ($.isFunction(inst.options.serverSync) ?
                            inst.options.serverSync.apply(elem[0], []) : null);
                        var now = new Date();
                        var serverOffset = (serverResult ? now.getTime() - serverResult.getTime() : 0);
                        this._serverSyncs.push([inst.options.serverSync, serverOffset]);
                    }
                    var timezone = inst.options.timezone;
                    timezone = (timezone == null ? -now.getTimezoneOffset() : timezone);
                    if (recalc || (!recalc && inst._until == null && inst._since == null)) {
                        inst._since = inst.options.since;
                        if (inst._since != null) {
                            inst._since = this.UTCDate(timezone, this._determineTime(inst._since, null));
                            if (inst._since && serverOffset) {
                                inst._since.setMilliseconds(inst._since.getMilliseconds() + serverOffset);
                            }
                        }
                        inst._until = this.UTCDate(timezone, this._determineTime(inst.options.until, now));
                        if (serverOffset) {
                            inst._until.setMilliseconds(inst._until.getMilliseconds() + serverOffset);
                        }
                    }
                    inst._show = this._determineShow(inst);
                },

                /** Remove the countdown widget from a div.
                 @param elem {jQuery} The containing division.
                 @param inst {object} The current instance object. */
                _preDestroy: function (elem, inst) {
                    this._removeElem(elem[0]);
                    elem.empty();
                },

                /** Pause a countdown widget at the current time.
                 Stop it running but remember and display the current time.
                 @param elem {Element} The containing division.
                 @example $(selector).countdown('pause') */
                pause: function (elem) {
                    this._hold(elem, 'pause');
                },

                /** Pause a countdown widget at the current time.
                 Stop the display but keep the countdown running.
                 @param elem {Element} The containing division.
                 @example $(selector).countdown('lap') */
                lap: function (elem) {
                    this._hold(elem, 'lap');
                },

                /** Resume a paused countdown widget.
                 @param elem {Element} The containing division.
                 @example $(selector).countdown('resume') */
                resume: function (elem) {
                    this._hold(elem, null);
                },

                /** Toggle a paused countdown widget.
                 @param elem {Element} The containing division.
                 @example $(selector).countdown('toggle') */
                toggle: function (elem) {
                    var inst = $.data(elem, this.name) || {};
                    this[!inst._hold ? 'pause' : 'resume'](elem);
                },

                /** Toggle a lapped countdown widget.
                 @param elem {Element} The containing division.
                 @example $(selector).countdown('toggleLap') */
                toggleLap: function (elem) {
                    var inst = $.data(elem, this.name) || {};
                    this[!inst._hold ? 'lap' : 'resume'](elem);
                },

                /** Pause or resume a countdown widget.
                 @private
                 @param elem {Element} The containing division.
                 @param hold {string} The new hold setting. */
                _hold: function (elem, hold) {
                    var inst = $.data(elem, this.name);
                    if (inst) {
                        if (inst._hold == 'pause' && !hold) {
                            inst._periods = inst._savePeriods;
                            var sign = (inst._since ? '-' : '+');
                            inst[inst._since ? '_since' : '_until'] =
                                this._determineTime(sign + inst._periods[0] + 'y' +
                                    sign + inst._periods[1] + 'o' + sign + inst._periods[2] + 'w' +
                                    sign + inst._periods[3] + 'd' + sign + inst._periods[4] + 'h' +
                                    sign + inst._periods[5] + 'm' + sign + inst._periods[6] + 's');
                            this._addElem(elem);
                        }
                        inst._hold = hold;
                        inst._savePeriods = (hold == 'pause' ? inst._periods : null);
                        $.data(elem, this.name, inst);
                        this._updateCountdown(elem, inst);
                    }
                },

                /** Return the current time periods.
                 @param elem {Element} The containing division.
                 @return {number[]} The current periods for the countdown.
                 @example var periods = $(selector).countdown('getTimes') */
                getTimes: function (elem) {
                    var inst = $.data(elem, this.name);
                    return (!inst ? null : (inst._hold == 'pause' ? inst._savePeriods : (!inst._hold ? inst._periods :
                        this._calculatePeriods(inst, inst._show, inst.options.significant, new Date()))));
                },

                /** A time may be specified as an exact value or a relative one.
                 @private
                 @param setting {string|number|Date} The date/time value as a relative or absolute value.
                 @param defaultTime {Date} The date/time to use if no other is supplied.
                 @return {Date} The corresponding date/time. */
                _determineTime: function (setting, defaultTime) {
                    var self = this;
                    var offsetNumeric = function (offset) { // e.g. +300, -2
                        var time = new Date();
                        time.setTime(time.getTime() + offset * 1000);
                        return time;
                    };
                    var offsetString = function (offset) { // e.g. '+2d', '-4w', '+3h +30m'
                        offset = offset.toLowerCase();
                        var time = new Date();
                        var year = time.getFullYear();
                        var month = time.getMonth();
                        var day = time.getDate();
                        var hour = time.getHours();
                        var minute = time.getMinutes();
                        var second = time.getSeconds();
                        var pattern = /([+-]?[0-9]+)\s*(s|m|h|d|w|o|y)?/g;
                        var matches = pattern.exec(offset);
                        while (matches) {
                            switch (matches[2] || 's') {
                                case 's':
                                    second += parseInt(matches[1], 10);
                                    break;
                                case 'm':
                                    minute += parseInt(matches[1], 10);
                                    break;
                                case 'h':
                                    hour += parseInt(matches[1], 10);
                                    break;
                                case 'd':
                                    day += parseInt(matches[1], 10);
                                    break;
                                case 'w':
                                    day += parseInt(matches[1], 10) * 7;
                                    break;
                                case 'o':
                                    month += parseInt(matches[1], 10);
                                    day = Math.min(day, self._getDaysInMonth(year, month));
                                    break;
                                case 'y':
                                    year += parseInt(matches[1], 10);
                                    day = Math.min(day, self._getDaysInMonth(year, month));
                                    break;
                            }
                            matches = pattern.exec(offset);
                        }
                        return new Date(year, month, day, hour, minute, second, 0);
                    };
                    var time = (setting == null ? defaultTime :
                        (typeof setting == 'string' ? offsetString(setting) :
                            (typeof setting == 'number' ? offsetNumeric(setting) : setting)));
                    if (time) time.setMilliseconds(0);
                    return time;
                },

                /** Determine the number of days in a month.
                 @private
                 @param year {number} The year.
                 @param month {number} The month.
                 @return {number} The days in that month. */
                _getDaysInMonth: function (year, month) {
                    return 32 - new Date(year, month, 32).getDate();
                },

                /** Default implementation to determine which set of labels should be used for an amount.
                 Use the <code>labels</code> attribute with the same numeric suffix (if it exists).
                 @private
                 @param num {number} The amount to be displayed.
                 @return {number} The set of labels to be used for this amount. */
                _normalLabels: function (num) {
                    return num;
                },

                /** Generate the HTML to display the countdown widget.
                 @private
                 @param inst {object} The current settings for this instance.
                 @return {string} The new HTML for the countdown display. */
                _generateHTML: function (inst) {
                    var self = this;
                    // Determine what to show
                    inst._periods = (inst._hold ? inst._periods :
                        this._calculatePeriods(inst, inst._show, inst.options.significant, new Date()));
                    // Show all 'asNeeded' after first non-zero value
                    var shownNonZero = false;
                    var showCount = 0;
                    var sigCount = inst.options.significant;
                    var show = $.extend({}, inst._show);
                    for (var period = Y; period <= S; period++) {
                        shownNonZero |= (inst._show[period] == '?' && inst._periods[period] > 0);
                        show[period] = (inst._show[period] == '?' && !shownNonZero ? null : inst._show[period]);
                        showCount += (show[period] ? 1 : 0);
                        sigCount -= (inst._periods[period] > 0 ? 1 : 0);
                    }
                    var showSignificant = [false, false, false, false, false, false, false];
                    for (var period = S; period >= Y; period--) { // Determine significant periods
                        if (inst._show[period]) {
                            if (inst._periods[period]) {
                                showSignificant[period] = true;
                            }
                            else {
                                showSignificant[period] = sigCount > 0;
                                sigCount--;
                            }
                        }
                    }
                    var labels = (inst.options.compact ? inst.options.compactLabels : inst.options.labels);
                    var whichLabels = inst.options.whichLabels || this._normalLabels;
                    var showCompact = function (period) {
                        var labelsNum = inst.options['compactLabels' + whichLabels(inst._periods[period])];
                        return (show[period] ? self._translateDigits(inst, inst._periods[period]) +
                        (labelsNum ? labelsNum[period] : labels[period]) + ' ' : '');
                    };
                    var minDigits = (inst.options.padZeroes ? 2 : 1);
                    var showFull = function (period) {
                        var labelsNum = inst.options['labels' + whichLabels(inst._periods[period])];
                        return ((!inst.options.significant && show[period]) ||
                        (inst.options.significant && showSignificant[period]) ?
                        '<span class="' + self._sectionClass + '">' +
                        '<span class="' + self._amountClass + '">' +
                        self._minDigits(inst, inst._periods[period], minDigits) + '</span>' +
                        '<span class="' + self._periodClass + '">' +
                        (labelsNum ? labelsNum[period] : labels[period]) + '</span></span>' : '');
                    };
                    return (inst.options.layout ? this._buildLayout(inst, show, inst.options.layout,
                        inst.options.compact, inst.options.significant, showSignificant) :
                        ((inst.options.compact ? // Compact version
                        '<span class="' + this._rowClass + ' ' + this._amountClass +
                        (inst._hold ? ' ' + this._holdingClass : '') + '">' +
                        showCompact(Y) + showCompact(O) + showCompact(W) + showCompact(D) +
                        (show[H] ? this._minDigits(inst, inst._periods[H], 2) : '') +
                        (show[M] ? (show[H] ? inst.options.timeSeparator : '') +
                        this._minDigits(inst, inst._periods[M], 2) : '') +
                        (show[S] ? (show[H] || show[M] ? inst.options.timeSeparator : '') +
                        this._minDigits(inst, inst._periods[S], 2) : '') :
                            // Full version
                        '<span class="' + this._rowClass + ' ' + this._showClass + (inst.options.significant || showCount) +
                        (inst._hold ? ' ' + this._holdingClass : '') + '">' +
                        showFull(Y) + showFull(O) + showFull(W) + showFull(D) +
                        showFull(H) + showFull(M) + showFull(S)) + '</span>' +
                        (inst.options.description ? '<span class="' + this._rowClass + ' ' + this._descrClass + '">' +
                        inst.options.description + '</span>' : '')));
                },

                /** Construct a custom layout.
                 @private
                 @param inst {object} The current settings for this instance.
                 @param show {boolean[]} Flags indicating which periods are requested.
                 @param layout {string} The customised layout.
                 @param compact {boolean} True if using compact labels.
                 @param significant {number} The number of periods with values to show, zero for all.
                 @param showSignificant {boolean[]} Other periods to show for significance.
                 @return {string} The custom HTML. */
                _buildLayout: function (inst, show, layout, compact, significant, showSignificant) {
                    var labels = inst.options[compact ? 'compactLabels' : 'labels'];
                    var whichLabels = inst.options.whichLabels || this._normalLabels;
                    var labelFor = function (index) {
                        return (inst.options[(compact ? 'compactLabels' : 'labels') +
                        whichLabels(inst._periods[index])] || labels)[index];
                    };
                    var digit = function (value, position) {
                        return inst.options.digits[Math.floor(value / position) % 10];
                    };
                    var subs = {
                        desc: inst.options.description, sep: inst.options.timeSeparator,
                        yl: labelFor(Y), yn: this._minDigits(inst, inst._periods[Y], 1),
                        ynn: this._minDigits(inst, inst._periods[Y], 2),
                        ynnn: this._minDigits(inst, inst._periods[Y], 3), y1: digit(inst._periods[Y], 1),
                        y10: digit(inst._periods[Y], 10), y100: digit(inst._periods[Y], 100),
                        y1000: digit(inst._periods[Y], 1000),
                        ol: labelFor(O), on: this._minDigits(inst, inst._periods[O], 1),
                        onn: this._minDigits(inst, inst._periods[O], 2),
                        onnn: this._minDigits(inst, inst._periods[O], 3), o1: digit(inst._periods[O], 1),
                        o10: digit(inst._periods[O], 10), o100: digit(inst._periods[O], 100),
                        o1000: digit(inst._periods[O], 1000),
                        wl: labelFor(W), wn: this._minDigits(inst, inst._periods[W], 1),
                        wnn: this._minDigits(inst, inst._periods[W], 2),
                        wnnn: this._minDigits(inst, inst._periods[W], 3), w1: digit(inst._periods[W], 1),
                        w10: digit(inst._periods[W], 10), w100: digit(inst._periods[W], 100),
                        w1000: digit(inst._periods[W], 1000),
                        dl: labelFor(D), dn: this._minDigits(inst, inst._periods[D], 1),
                        dnn: this._minDigits(inst, inst._periods[D], 2),
                        dnnn: this._minDigits(inst, inst._periods[D], 3), d1: digit(inst._periods[D], 1),
                        d10: digit(inst._periods[D], 10), d100: digit(inst._periods[D], 100),
                        d1000: digit(inst._periods[D], 1000),
                        hl: labelFor(H), hn: this._minDigits(inst, inst._periods[H], 1),
                        hnn: this._minDigits(inst, inst._periods[H], 2),
                        hnnn: this._minDigits(inst, inst._periods[H], 3), h1: digit(inst._periods[H], 1),
                        h10: digit(inst._periods[H], 10), h100: digit(inst._periods[H], 100),
                        h1000: digit(inst._periods[H], 1000),
                        ml: labelFor(M), mn: this._minDigits(inst, inst._periods[M], 1),
                        mnn: this._minDigits(inst, inst._periods[M], 2),
                        mnnn: this._minDigits(inst, inst._periods[M], 3), m1: digit(inst._periods[M], 1),
                        m10: digit(inst._periods[M], 10), m100: digit(inst._periods[M], 100),
                        m1000: digit(inst._periods[M], 1000),
                        sl: labelFor(S), sn: this._minDigits(inst, inst._periods[S], 1),
                        snn: this._minDigits(inst, inst._periods[S], 2),
                        snnn: this._minDigits(inst, inst._periods[S], 3), s1: digit(inst._periods[S], 1),
                        s10: digit(inst._periods[S], 10), s100: digit(inst._periods[S], 100),
                        s1000: digit(inst._periods[S], 1000)
                    };
                    var html = layout;
                    // Replace period containers: {p<}...{p>}
                    for (var i = Y; i <= S; i++) {
                        var period = 'yowdhms'.charAt(i);
                        var re = new RegExp('\\{' + period + '<\\}([\\s\\S]*)\\{' + period + '>\\}', 'g');
                        html = html.replace(re, ((!significant && show[i]) ||
                        (significant && showSignificant[i]) ? '$1' : ''));
                    }
                    // Replace period values: {pn}
                    $.each(subs, function (n, v) {
                        var re = new RegExp('\\{' + n + '\\}', 'g');
                        html = html.replace(re, v);
                    });
                    return html;
                },

                /** Ensure a numeric value has at least n digits for display.
                 @private
                 @param inst {object} The current settings for this instance.
                 @param value {number} The value to display.
                 @param len {number} The minimum length.
                 @return {string} The display text. */
                _minDigits: function (inst, value, len) {
                    value = '' + value;
                    if (value.length >= len) {
                        return this._translateDigits(inst, value);
                    }
                    value = '0000000000' + value;
                    return this._translateDigits(inst, value.substr(value.length - len));
                },

                /** Translate digits into other representations.
                 @private
                 @param inst {object} The current settings for this instance.
                 @param value {string} The text to translate.
                 @return {string} The translated text. */
                _translateDigits: function (inst, value) {
                    return ('' + value).replace(/[0-9]/g, function (digit) {
                        return inst.options.digits[digit];
                    });
                },

                /** Translate the format into flags for each period.
                 @private
                 @param inst {object} The current settings for this instance.
                 @return {string[]} Flags indicating which periods are requested (?) or
                 required (!) by year, month, week, day, hour, minute, second. */
                _determineShow: function (inst) {
                    var format = inst.options.format;
                    var show = [];
                    show[Y] = (format.match('y') ? '?' : (format.match('Y') ? '!' : null));
                    show[O] = (format.match('o') ? '?' : (format.match('O') ? '!' : null));
                    show[W] = (format.match('w') ? '?' : (format.match('W') ? '!' : null));
                    show[D] = (format.match('d') ? '?' : (format.match('D') ? '!' : null));
                    show[H] = (format.match('h') ? '?' : (format.match('H') ? '!' : null));
                    show[M] = (format.match('m') ? '?' : (format.match('M') ? '!' : null));
                    show[S] = (format.match('s') ? '?' : (format.match('S') ? '!' : null));
                    return show;
                },

                /** Calculate the requested periods between now and the target time.
                 @private
                 @param inst {object} The current settings for this instance.
                 @param show {string[]} Flags indicating which periods are requested/required.
                 @param significant {number} The number of periods with values to show, zero for all.
                 @param now {Date} The current date and time.
                 @return {number[]} The current time periods (always positive)
                 by year, month, week, day, hour, minute, second. */
                _calculatePeriods: function (inst, show, significant, now) {
                    // Find endpoints
                    inst._now = now;
                    inst._now.setMilliseconds(0);
                    var until = new Date(inst._now.getTime());
                    if (inst._since) {
                        if (now.getTime() < inst._since.getTime()) {
                            inst._now = now = until;
                        }
                        else {
                            now = inst._since;
                        }
                    }
                    else {
                        until.setTime(inst._until.getTime());
                        if (now.getTime() > inst._until.getTime()) {
                            inst._now = now = until;
                        }
                    }
                    // Calculate differences by period
                    var periods = [0, 0, 0, 0, 0, 0, 0];
                    if (show[Y] || show[O]) {
                        // Treat end of months as the same
                        var lastNow = this._getDaysInMonth(now.getFullYear(), now.getMonth());
                        var lastUntil = this._getDaysInMonth(until.getFullYear(), until.getMonth());
                        var sameDay = (until.getDate() == now.getDate() ||
                        (until.getDate() >= Math.min(lastNow, lastUntil) &&
                        now.getDate() >= Math.min(lastNow, lastUntil)));
                        var getSecs = function (date) {
                            return (date.getHours() * 60 + date.getMinutes()) * 60 + date.getSeconds();
                        };
                        var months = Math.max(0,
                            (until.getFullYear() - now.getFullYear()) * 12 + until.getMonth() - now.getMonth() +
                            ((until.getDate() < now.getDate() && !sameDay) ||
                            (sameDay && getSecs(until) < getSecs(now)) ? -1 : 0));
                        periods[Y] = (show[Y] ? Math.floor(months / 12) : 0);
                        periods[O] = (show[O] ? months - periods[Y] * 12 : 0);
                        // Adjust for months difference and end of month if necessary
                        now = new Date(now.getTime());
                        var wasLastDay = (now.getDate() == lastNow);
                        var lastDay = this._getDaysInMonth(now.getFullYear() + periods[Y],
                            now.getMonth() + periods[O]);
                        if (now.getDate() > lastDay) {
                            now.setDate(lastDay);
                        }
                        now.setFullYear(now.getFullYear() + periods[Y]);
                        now.setMonth(now.getMonth() + periods[O]);
                        if (wasLastDay) {
                            now.setDate(lastDay);
                        }
                    }
                    var diff = Math.floor((until.getTime() - now.getTime()) / 1000);
                    var extractPeriod = function (period, numSecs) {
                        periods[period] = (show[period] ? Math.floor(diff / numSecs) : 0);
                        diff -= periods[period] * numSecs;
                    };
                    extractPeriod(W, 604800);
                    extractPeriod(D, 86400);
                    extractPeriod(H, 3600);
                    extractPeriod(M, 60);
                    extractPeriod(S, 1);
                    if (diff > 0 && !inst._since) { // Round up if left overs
                        var multiplier = [1, 12, 4.3482, 7, 24, 60, 60];
                        var lastShown = S;
                        var max = 1;
                        for (var period = S; period >= Y; period--) {
                            if (show[period]) {
                                if (periods[lastShown] >= max) {
                                    periods[lastShown] = 0;
                                    diff = 1;
                                }
                                if (diff > 0) {
                                    periods[period]++;
                                    diff = 0;
                                    lastShown = period;
                                    max = 1;
                                }
                            }
                            max *= multiplier[period];
                        }
                    }
                    if (significant) { // Zero out insignificant periods
                        for (var period = Y; period <= S; period++) {
                            if (significant && periods[period]) {
                                significant--;
                            }
                            else if (!significant) {
                                periods[period] = 0;
                            }
                        }
                    }
                    return periods;
                }
            });

        })(jQuery);


        /* http://keith-wood.name/countdown.html
         Simplified Chinese initialisation for the jQuery countdown extension
         Written by Cloudream (cloudream@gmail.com). */
        (function ($) {
            $.countdown.regionalOptions['zh-CN'] = {
                labels: ['年', '月', '周', '天', '时', '分', '秒'],
                labels1: ['年', '月', '周', '天', '时', '分', '秒'],
                compactLabels: ['年', '月', '周', '天'], compactLabels1: ['年', '月', '周', '天'],
                whichLabels: null,
                digits: ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'],
                timeSeparator: ':', isRTL: false
            };
            $.countdown.setDefaults($.countdown.regionalOptions['zh-CN']);
        })(jQuery);

    }
})